I use an MSR Dragonfly white gas/kerosene/car gas/fuel oil "multi fuel" stove. It not only has the BTU output but is dead reliable. I always use it with its foil windscreen for maximum efficiency.

This stove can simmer like no other liquid fuel stove I've seen. The low simmer capability saves gas when cooking. To me winter is the time to use the BEST suited gear for the climate. White gas stoves get my top endorsement.

Eric